Mine was an old Archie Sonic comic. It was about time travel, and the entire thing was written backwards (you had to read it in a mirror). The 90s were wild, man.
One of my first consoles was a Genesis (might be aging myself a bit there), and Sonic was a big part of that experience. That said, I really only had that one Sonic comic. The fan base sort of turned me off the series. They're a little...intense, no offense to any currently reading.
Of course, I also hear the lore goes HARD, so it'll always be a little tempting.